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<seo title="HandWiki is a wiki encyclopedia of science and computing" metakeywords="HandWiki Wiki  encyclopedia online computational science free science datascience visualization data mining bigdata physics chemistry biology engineering software programming" metadescription="HandWiki is an online encyclopedia for collaborative editing of articles dedicated to applications of computers, software  and programming in science and technology"/> 
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[[File:Handwiki_hand.svg|80px|HandWiki datascience encyclopedia]]
<font size="+4"><b>Hand<font color='#ffb84d'>W</font>iki</b></font> <br> 
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Online Encyclopedia of Science and Computing<br>
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HandWiki is an online encyclopedia and a content management environment for collaborative editing of articles on science and computers.  Registered users can post and edit articles, books, manuals and tutorials.  Read [[HandWiki:About | about HandWiki]]. One can login or [[Special:CreateAccount | request account]] using the top-right menu. HandWiki has +100,000 articles, and is constantly growing.

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{{Clickable button 2|Create a new article|class=mw-ui-progressive|url=https://handwiki.org/wiki/create}}
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<h3 class="subheader"><span class="fa fa-bolt fa-l" style="display:inline;"></span> News & Recent articles</h3>
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In 2020 HandWiki has become the largest online encyclopedia of physics, math and computing. It includes Wikipedia articles, plus thousands of additional  articles  and books. '''Recent articles:'''
{{Special:Newestpages/all/5}}
::''[[Special:NewestPages|<span style="color:#1d6166">See More.. </span>]]''

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<h3 class="subheader"><span class="fa fa-hand-paper-o fa-lg" style="display:inline;"></span>Featured Article </h3>

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The '''HandWiki''' is an [[internet]] [[Wiki]]-style encyclopedia for professional researchers in various [[branches of science]] and [[computer science]]. 
As other [[Wiki]] type encyclopedias, HandWiki is designed for collaborative editing of articles. 
One notable feature of HandWiki is that uses dedicated [[Wikipedia:Namespace| namespace]]s for each science topic, unlike the traditional [[Wikipedia]]
that uses the [[Help:Categories|MediaWiki categories]] concept for all articles... 

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''[[HandWiki|<span style="color:#1d6166">Read More.. </span>]]''

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<h3 class="subheader"><span class="fa fa-search" style="display:inline;"></span> Search </h3>

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<form action="/wiki/index.php" id="searchform" class="mw-search">
<input type="search" name="search" placeholder="Search" title="Search [alt-shift-f]" accesskey="f" id="searchInput" autocomplete="on"></br>
<input type="submit" value="Go" name="Go" id="searchGoButton" />
<input type="submit" value="Search" name="fulltext" /></p>
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Search in {{NUMBEROFPAGES}} HandWiki articles, including [https://handwiki.org/wiki/search/ searches in specialized topics]. 
For searches inside 40,000 source code descriptions and 700 examples, use the [https://datamelt.org/search/ DMelt project].

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== Mathematics and Data Science ==

Here are encyclopedic articles on abstract concepts applied to many branches of science. They cover  
data science that unifies math, statistics, data analysis, machine learning, computer science, and information science. 

{{ContentGrid
|content=
{{InfoCard
|heading =  [[File:Handwiki_analysis.svg|46px|link=HandWiki:Math]]  [[HandWiki:Math|Mathematics]]
|content = Areas of mathematics: calculus, analysis, algebra, geometry, logic, statistics etc.<br/>
→ {{ll|HandWiki:Math| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Main Add article]] }}

{{InfoCard
|heading =  [[File:Handwiki_measurement.svg|40px|link=HandWiki:Analysis]] [[HandWiki:Analysis|Data Analysis]]
|content = Analysis techniques, data mining, algorithms and visualization <br/>
→ {{ll|HandWiki:Analysis| Learn more.}}  {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Analysis Add article]] }}

{{InfoCard
|heading =  [[File:Handwiki_computer.svg|46px|link=HandWiki:Computers]] [[HandWiki:Computers|Computers]]
|content = Computers, computational methods and programming languages <br/>
→ {{ll|HandWiki:Computers| Learn more.}}  {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Computers Add article]]}}

{{InfoCard
|heading =  [[File:Handwiki_software.svg|46px|link=HandWiki:Software]] [[HandWiki:Software|Software]]
|content = Software (computer programs and libraries) <br/>
→ {{ll|HandWiki:Software| Learn more.}}  {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Software Add article]]}}

}}



== Natural, Formal and Social Sciences ==

Here are article related to specific sciences organized by topic.
 
{{ContentGrid
|content=
{{InfoCard |heading =  [[File:Handwiki_astronomy.svg|46px|link=HandWiki:Astronomy]]  [[HandWiki:Astronomy|Astronomy]]
|content = Universe, cosmology, celestial objects and phenomena<br/>
→ {{ll|HandWiki:Astronomy| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Astronomy Add article]]  }}

{{InfoCard |heading =  [[File:Handwiki biology.svg|46px|link=HandWiki:Biology]] [[HandWiki:Biology|Biology]]
|content = Different areas of biology and related<br/>
→ {{ll|HandWiki:Biology| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Biology Add article]] }}

{{InfoCard |heading =  [[File:Handwiki_medicine.svg|46px|link=HandWiki:Medicine]] [[HandWiki:Medicine|Medicine]]
|content = Different areas of biology and related<br/>
→ {{ll|HandWiki:Medicine| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Medicine Add article]]  }}

{{InfoCard |heading =  [[File:Handwiki_chemistry.svg|46px|link=HandWiki:Chemistry]] [[HandWiki:Chemistry|Chemistry]]
|content = Composition, structure and properties of matter<br/>
→ {{ll|HandWiki:Chemistry| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Chemistry Add article]]   }}

{{InfoCard |heading =  [[File:Handwiki_physics.svg|46px|link=HandWiki:Physics]] [[HandWiki:Physics|Physics]]
|content =All about physical sciences and related <br/>
→ {{ll|HandWiki:Physics| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Physics Add article]]  }}

{{InfoCard |heading =  [[File:Handwiki_earth.svg|46px|link=HandWiki:Earth]] [[HandWiki:Earth|Earth]]
|content =Sciences about the planet Earth <br/>
→ {{ll|HandWiki:Earth| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Earth Add article]] }}

{{InfoCard |heading =  [[File: Handwiki_social.svg|46px|link=HandWiki:Social]] [[HandWiki:Social|Social]]
|content = Topics related to  social sciences and humanity <br/>
→ {{ll|HandWiki:Social| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Social Add article]] }}

{{InfoCard |heading =  [[File:Handwiki_finance.svg|46px|link=HandWiki:Finance]] [[HandWiki:Finance|Finance]]
|content = Market and financial calculations <br/>
→ {{ll|HandWiki:Finance| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Finance Add article]] }}

{{InfoCard |heading =  [[File: Handwiki_engineering.svg|46px|link=HandWiki:Engineering]] [[HandWiki:Engineering|Engineering]]
|content = Design and manufacture of complex products<br/>
→ {{ll|HandWiki:Engineering| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Engineering Add article]]  }}

{{InfoCard |heading =  [[File:Handwiki_unsolved.svg|36px|link=HandWiki:Unsolved]] [[HandWiki:Unsolved|Unsolved]]
|content = Unexplained problems and unusual observations<br/>
→ {{ll|HandWiki:Unsolved| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Unsolved Add article]]   }}

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== Companies, Organizations and People ==

Here are articles about organizations, companies and people  contributing to research and technology.
They serve to support the citations in HandWiki research articles and books. 

{{ContentGrid
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{{InfoCard
|heading =  [[File:Handwiki_organization.svg|46px|link=HandWiki:Organization]]  [[HandWiki:Organization|Organizations]]
|content = Organizations contributing to science and technology <br/>
→ {{ll|HandWiki:Organization| Learn more.}} {{spaces|3}} [[https://handwiki.org/wiki/create/index.php?t=Organization Add article]] }}

{{InfoCard
|heading =  [[File:Handwiki_company.svg|46px|link=HandWiki:Company]] [[HandWiki:Company|Companies]]
|content = Companies contributing to science and technologies <br/>
→ {{ll|HandWiki:Company| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Company Add article]]}}

{{InfoCard
|heading =  [[File: Handwiki_biography.svg|38px|link=HandWiki:Biography]] [[HandWiki:Biography|Biographies]]
|content = Biographies of researches in science and technology <br/>
→ {{ll|HandWiki:Biography| Learn more.}} {{spaces|3}}  [[https://handwiki.org/wiki/create/index.php?t=Biography Add article]]}}

}}


== Programming Guides, Books and Tutorials  ==

These tutorials are designed for beginners with little or no coding experience. 
The tutorials are most useful for those who want to learn Python, and especially for those who work with the DataMelt and  jMathLab projects tailored to numerical, statistical and scientific applications. To maximize your learning, 
the tutorials are fully interactive and require Java installed on your computer.

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<ul> 

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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/Linux:Start Linux Cookbook]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=The Linux Cookbook: Tips and Techniques}}
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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/Book:J/Start Guide to Jython]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=The Definitive Guide to Jython: Python for Java}}
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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/BeanShellTutorial:Start BeanShell tutorial]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Simplified Java scripting for beginners}}
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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/JythonTutorial:Start Jython tutorial] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Interactive tutorials for Python/Jython}}
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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/DMeltTutorial:Start DataMelt  tutorial] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Interactive tutorials describing DataMelt program}}
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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/JMathLabTutorial:Start JMathLab  tutorial] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Interactive tutorials for Matlab-like scripting}}
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<li style="display: inline-block;">
{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/RTextDoc:Start RTextDoc manual] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=In-depth description of RTextDoc LaTeX editor}}
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== Topical in-depth encyclopedias ==

Here are in-depth encyclopedias organized according the scientific fields supported in HandWiki.

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{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/DScience:Start Data science]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Online course on data science with the focus on Java}}
</li>

<li style="display: inline-block;">
{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/Physics:PP/Start Particle Physics]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Data analysis techniques in particle physics}}
</li>
</ul>
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== Manuals, Books and Monographs==

Here are manuals, books and monographs. Books and manuals are  organized as collections of articles, and typically span many wiki pages.
A monograph discusses a detailed study of a single specialized subject. Monographs use a single wiki page. 

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<li style="display: inline-block;">
{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/DMelt:Start DataMelt manual]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=DataMelt software for data science}}
</li>

<li style="display: inline-block;">
{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/Book:Start Books] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg= Books on science and computers}}
</li>

<li style="display: inline-block;">
{{Robelbox2|theme=14|title=[https://handwiki.org/wiki/Monograph:Start Monographs] | icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg= Monographs on science and computer simulations}}
</li>

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== Help ==

This section contains the description of the HandWiki encyclopedia project.

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<li style="display: inline-block;">
{{Robelbox2|theme=10|title= [https://handwiki.org/wiki/HandWiki:About About HandWiki]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=About the HandWiki project, and why it was created}}
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{{Robelbox2|theme=10|title=[https://handwiki.org/wiki/HandWiki:Help Editing Help]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Description of HandWiki formatting and editing tricks}}
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{{Robelbox2|theme=10|title=[https://handwiki.org/wiki/HandWiki:Copyrights Copyrights]| icon = Handwiki_book38.png | iconwidth=38px |width=260px | msg=Copyright statements of HandWiki articles}}
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